Surface electron emission device and display device having the same

Abstract

Provided are a surface electron emission device and a display device having the same. The surface electron emission device may include a lower electrode, an insulating layer, and an upper electrode sequentially stacked, and a nano structure layer formed on the upper electrode.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The example embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings. FIGS. 1-25 represent non-limiting, the example embodiments as described herein.

FIGS. 1 and 3 are diagrams illustrating a metal-insulator-metal (MIM) device according to example embodiments; and

FIGS. 2 and 4 are diagrams illustrating a display device having a MIM device according to example embodiments.

Claims

1. A surface electron emission device comprising: a lower electrode, at least one insulating layer, and an upper electrode sequentially stacked; anda nano structure layer formed on the upper electrode.

2. The surface electron emission device of claim 1, wherein the nano structure layer is a carbon nano structure layer.

3. The surface electron emission device of claim 2, wherein the carbon nano structure layer is a fullerene layer.

4. The surface electron emission device of claim 1, wherein the nano structure layer is formed to a thickness of about 0.2 nm to about 20 nm.

5. The surface electron emission device of claim 1, wherein the at least one insulating layer is one selected from the group consisting of an aluminum oxide layer, a NiO layer, a ZrO2 layer, a ZnO layer, and a TiO2 layer.

6. The surface electron emission device of claim 1, wherein at least one of the lower electrode and the upper electrode is one selected from the group consisting of an Au layer, a Cu layer, an Al layer, a Nb layer, an Ag layer, a W layer, a Co layer, and a Ni layer.

7. The surface electron emission device of claim 1, wherein the at least one insulating layer includes two insulating layers.

8. The surface electron emission device of claim 7, further comprising: an intermediate electrode between the two insulating layers.

9. The surface electron emission device of claim 8, wherein the nano structure layer is a carbon nano structure layer.

10. The surface electron emission device of claim 9, wherein the carbon nano structure layer is a fullerene layer.

11. The surface electron emission device of claim 8, wherein the nano structure layer is formed to a thickness of 0.2 to 20 nm.

12. The surface electron emission device of claim 8, wherein the two insulating layers are formed of one selected from the group consisting of aluminum oxide, NiO, ZrO2, ZnO, and TiO2.

13. The surface electron emission device of claim 8, wherein at least one of the lower electrode, the intermediate electrode, and the upper electrode is one selected from the group consisting of an Au layer, a Cu layer, an Al layer, a Nb layer, an Ag layer, a W layer, a Co layer, and a Ni layer.

14. A display device having a surface electron emission device, comprising: an upper substrate and a lower substrate disposed parallel to each other;an anode electrode formed on an inner surface of the upper substrate facing the lower substrate;a phosphor layer formed on the anode electrode; andthe surface electron emission device of claim 1 formed on the lower substrate.

15. The display device of claim 14, wherein the lower electrode and the upper electrode are stripe shaped electrodes that form one pixel region where they cross each other.

16. The display device of claim 14, wherein the upper electrode and the upper substrate are formed of a transparent material so that light can pass through.

17. A display device having a surface electron emission device, comprising: an upper substrate and a lower substrate disposed parallel to each other;an anode electrode formed on an inner surface of the upper substrate facing the lower substrate;a phosphor layer formed on the anode electrode; andthe surface electron emission device of claim 8 formed on the lower substrate.

18. The display device of claim 17, wherein the lower electrode and the upper electrode are stripe shaped electrodes that form one pixel region where they cross each other.

19. The display device of claim 17, wherein the upper electrode and the upper substrate are formed of a transparent material so that light can pass through.